AT&T has given the details on its new mobile hotspot application, which will launch later this month. One nice feature of this is being carried over to the company’s current Bluetooth tethering option: more data.

The Old Tethering PlanAT&T’s tethering plan has been poorly regarded by many users and critics, who see its cost as redundant. AT&T charges $25 a month for 2 GB of wireless data transfers a month, and under the present plan customers pay an additional $20 to tether their phone to their laptop, with the mobile device functioning as a wireless hookup for the computer.

The plan doesn’t include any extra data, and in essence, has customers paying significantly more to use already purchased data in a new way.

The New Plan and Mobile HotspotIn the face of this less-than-optimal tethering option, enter the AT&T mobile hotspot. Available February 13 for the HTC Inspire 4G, AT&T’s mobile hotspot will also cost $20 per month, but will come with an additional 2 GB of data, doubling the users monthly allotment. It will also offer connectivity for multiple devices and use a Wi-Fi connection, which will offer simpler setup and greater flexibility than the current system, which uses Bluetooth.

Users on the old tethering plan can still only have one device connected at a time, and still have to deal with the comparable hassle of Bluetooth setup, but they too will receive the additional 2 GB of data transfers around February 13.

AT&T has, so far, offered no word as to when the Mobile Hotspot app would be available on more phones than just the Inspire 4G, but considering that Verizon will offer mobile hotspot service on the iPhone when it’s released on February 10, AT&T might need to make a move to prevent its customers’ mass exodus.